A Opisthostoma paulucciae ((Crosse and Nevill, in Crosse, 1879b)) BOR/MOL 9019. Perak, Ipoh, Gunung Kanthan B Opisthostoma ‘tempurung 1 detached’ BOR/MOL 12504. Perak, Ipoh, Gunung Tempurung Plot 4 C Opisthostoma trapezium van Benthem Jutting, 1952 BOR/MOL 9035. Perak, Ipoh, Gunung Kanthan D Opisthostoma vermiculum Clements and Vermeulen, in Clements et al., 2008 BOR/MOL 10242. Perak, Ipoh, Gunung Rapat.

 
 
  Part of: Foon JK, Clements GR, Liew T-S (2017) Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia. ZooKeys 682: 1-94. https://doi.org/10.3897/zookeys.682.12999